Whatever Happened to Old Mac Donald's Farm… Concentrated Animal Feeding Operation, Factory Farming and the Safety of the Nation's Food Supply

Today, livestock farming is a far stretch from the nostalgic notion of animals grazing in green pastures, roaming free in the fresh country air and returning at the end of the day to a cozy barn. Simply stated, livestock farming is a large scale business, where tens of thousands of animals are swiftly raised industrial-style for maximum profit. Under the "factory farm" model, large corporate owned operations grow quantities of animals for slaughter for human consumption as food. In fact, livestock farms now raise 40% of all animals in the United States.